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why sample t0 linearly from 0 to 1 in order to get a linear sampling in disparity #29

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shuochen365 opened this issue Jun 9, 2021 · 1 comment

shuochen365 commented Jun 9, 2021

I can understand the paper moving the camera position origin to the z = -n plane.

t = -(near + rays_o[..., 2]) / rays_d[..., 2]

rays_o = rays_o + t[..., None] * rays_d

But I don't understand why t0 changes linearly from 0 to 1 in NDC space. Because according to the formula, it should be - 1 to 1.

Owner

Kai-46 commented Jun 23, 2021

You might want to check this thread: bmild/nerf#18.

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